北海道大学で開催された2026年秋季応用物理学会学術講演会で助教のHuyさん、博士課程の加々美君、Thuan君、修士課程のLong君、OBの石田君が下記の発表を行いました。

[8p-E207-16] BEOL-Compatible Topological Semimetal YPtBi with High Spin-Orbit Torque Efficiency Enabled by Berry-Phase Monopole Engineering
〇 Sho Kagami, Ohiro Fujie, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai

[9a-E208-4] Enhanced spin Hall conductivity at high temperature in TaSi₂ driven by Berry-phase monopoles
〇石田 乾、白倉 孝典、ファム ナムハイ

[11a-E208-2] Highly effective and external-field-free spin-orbit torque switching of CoFeB/MgO using hybrid in-plane ferromagnet/BiSb topological insulator
〇 Ho Hoang Huy, Pham Nam Hai

[11a-E208-3] Manufacturable Top-BiSb SOT-MRAM Using a Conductive RuOx Interlayer
〇Thuan Van Pham, Ho Hoang Huy, Pham Nam Hai

[11p-E214-8] A new half-Heusler topological semimetal for SOT – MRAM applications with improved spin Hall conductivity and low surface roughness
〇 Trinh Dai Hoang Long, Ho Hoang Huy, Pham Nam Hai

京王プラザホテルと工学院大学で開催された半導体物理国際学会ICPS2026に博士課程OBの西山さんとM2の大枝君が下記の発表を行いました。

[Tu-P1-D-04] Large anomalous Nernst effect in room-temperature ferromagnetic semiconductor (In,Fe)Sb
Pham Nam Hai, Kota Ejiri, Li Wentao, 〇Shuzo Oeda, Yun Jaeyeon, Masaaki Tanaka

[Tu-P2-E-04] Demonstration of MIR detector using sputter-fabricated BiSb topological insulator film
〇Hajime Nishiyama, Pham Nam Hai, Yukio Kawano

[We-A2-E-04] Optical constants (n, κ) and absorption of BiSb topological insulator in Mid-infrared region measured by RT technique
〇Hajime Nishiyama, Pham Nam Hai, Tomohiro Amemiya, Shun Hashiyada, Yukio Kawano

イギリスのマンチェスターで開催されたIntermag2026国際学会に助教のHuyさん、博士課程の加々美君とThuan君が下記の発表を行いました。

[DS-03] Ho Hoang Huy, Li Wentao, Pham Van Thuan, Shigeyuki Hirayama, Yushi Kato, and Pham Nam Hai, “Large Spin Hall Angle in Highly-Textured Sputtered BiSb (012) Topological Insulator on Si/SiO2 Substrates Enabled by Buffer/Seed Stack”.

[DS-12] Sho Kagami, Zhang Ruixian, Daiki Ito, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai, “Giant Perpendicular Magnetic Anisotropy in Mo / Boron-rich CoFeB / MgAl2O4 Junction for p-MTJ integration to 5-7 nm CMOS Processes”.

[CS-05] Pham Van Thuan, Ho Hoang Huy, Li Wentao, Shigeyuki Hirayama, Yushi Kato, Pham Nam Hai, “Large spin Hall effect in 300C annealed BiSb topological insulator and perpendicularly magnetized CoFeB using oxide buffer/seed and interfacial layers on Si/SiO2 substrates”.

京都大学で開催されたVANJ Conference 2025にPham教授が下記のKeynote講演を行いました。

[S05-2] PHAM Nam Hai, “SPINTRONIC MATERIALS FOR ULTRALOW POWER EDGE AI”

Pacifico Yokohamaで開催された国際学会SSDM2025でD1の加々美君が下記の発表を行いました。本研究成果はウェスタンデジタル社との共同研究の成果です。

[D-1-04 (Late News)]
Fabrication and Evaluation of Topological Semimetal YPtBi/Ta/CoFeB Junctions with High Spin Hall Angle for SOT-MRAM
〇Sho Kagami, Reo Yamamoto, Zhang Ruixian, Ken Ishida, Quang Le, Brian York, Cherngye Hwang, Xiaoyong Liu, Son Le, Maki Maeda, Tuo Fan, Yu Tao, Hisashi Takano, Pham Nam Hai

名城大学天白キャンパスで開催された2025年秋季応用物理学会学術講演会でD1のThuan君が下記の発表を行いました。本研究成果は日本サムスン社との共同研究の成果です。

[8p-N303-11] Large spin Hall effect in BiSb topological insulator and perpendicularly magnetized CoFeB heterojunctions with oxide buffer and interfacial layers
〇(D)Thuan Van Pham, Hoang Huy Ho, Wentao Li, S. Takahashi, Y. Kato, S. Hirayama, Nam Hai Pham